package com.atguigu.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

@Service
public class PaymentService {

    public String paymentInfo_OK(Integer id){
        return "线程池:  "+Thread.currentThread().getName()+"paymentInfo_OK, id "+id;
    }

    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler" ,commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds",value = "5000")
    })
    public String paymentInfo_TimeOut(Integer id){
//        int age = 10 / 0 ;
        int timeNumber = 3 ;
        try {
            TimeUnit.SECONDS.sleep(timeNumber);
        }catch (Exception e){
            e.printStackTrace();
        }
        return "线程池:  "+Thread.currentThread().getName()+"paymentInfo_TimeOut, id "+id+"耗时"+timeNumber+"秒钟";
    }

    public String paymentInfo_TimeOutHandler(Integer id){

        return "线程池:  "+Thread.currentThread().getName()+"系统繁忙，请稍后再试, id "+id+"o(╥﹏╥)o ";

    }

//    ===============服务降级
/*
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback" , commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled",value = "true"),//是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "10"),//请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"),//时间窗口
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60"),//失败率达到多少
    })  */
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled",value = "true"),// 是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "10"),// 请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"), // 时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60"),// 失败率达到多少后跳闸
    })
    @GetMapping("/payment/hystrix/ok/{id}")
    public String paymentCircuitBreaker(@PathVariable("id") Integer id){
        if (id<0){
            throw new RuntimeException("*******id不能为负数");
        }
        String serialNumber = IdUtil.simpleUUID();
        return Thread.currentThread().getName()+"调用成功，流水号"+serialNumber;
    }

    @GetMapping("/payment/hystrix/ok/{id}")
    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id){
        return "id不能为负数，请稍后再试，o(╥﹏╥)o   ~ id："+id;
    }





}
